APES Question Anwers

Topics: Nitrogen, Water, Ecosystem Pages: 0 (3963 words) Published: September 1, 2014
Environment: The Science Behind the Stories, 4e (Withgott) Chapter 5 Environmental Systems and Ecosystem Ecology

5.1 Graph and Figure Interpretation Questions

Use Figure 5.1 to answer the following questions.

1) This graph helps to explain ________.
A) why the open ocean is so productive
B) why cultivated lands are a logical choice to replace rainforests C) why we need to be concerned with damage to rainforests and coral reefs D) why tundra has such high net primary productivity of biomass E) the importance of deserts

Answer: C
Diff: 2
Objective: 5.1 Earth's environmental systems
2) Recall that areas with high net primary productivity not only produce high levels of biomass rapidly, they also take up large amounts of CO2 and give off large amounts of oxygen. What is the likely result of the increasing amounts of sediments and fertilizers in the major rivers emptying into oceans and affecting algal beds, reefs, swamps, and estuaries? A) Productivity in these areas will increase permanently, leading to more CO2 uptake and more oxygen released. B) Eutrophication, followed by hypoxia, is a likely result, ultimately leading to less CO2 uptake and less oxygen released. C) Eutrophication, followed by hypoxia, is a likely result, ultimately leading to more CO2 uptake and more oxygen released. D) Eutrophication, followed by hypoxia, is a likely result, ultimately leading to less CO2 uptake and more oxygen released. E) Fisheries will improve as the extra nutrients feed shellfish and fish. Answer: B

Diff: 2
Objective: 5.3 Human impacts on systems and cycles

3) Overall, it appears that biomes with more available fresh water ________. A) tend to have less productivity than those without much freshwater B) tend to have about the same productivity as those without much freshwater C) tend to have more productivity than those without much freshwater D) don't differentiate between freshwater as rainfall and freshwater as ice in glaciers E) No real...
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